Avoid flashing when resizing plugins that use PaintManager. Copy the bitmap ...

webkit/glue/plugins/pepper_device_context_2d.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WEBKIT_GLUE_PLUGINS_PEPPER_DEVICE_CONTEXT_2D_H_
 #define WEBKIT_GLUE_PLUGINS_PEPPER_DEVICE_CONTEXT_2D_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 49 matching lines @@
   void Paint(WebKit::WebCanvas* canvas,
              const gfx::Rect& plugin_rect,
              const gfx::Rect& paint_rect);
 
   // Notifications that the view has rendered the page and that it has been
   // flushed to the screen. These messages are used to send Flush callbacks to
   // the plugin. See
   void ViewInitiatedPaint();
   void ViewFlushedPaint();
 
+  ImageData* image_data() { return image_data_.get(); }
+
  private:
   // Tracks a call to flush that requires a callback.
   class FlushCallbackData {
    public:
     FlushCallbackData() {
       Clear();
     }
 
     FlushCallbackData(const PP_CompletionCallback& callback) {
       Set(callback);
@@ skipping 84 matching lines @@
   // later. This is set when one of those tasks is pending so that we can
   // enforce the "only one pending flush at a time" constraint in the API.
   bool offscreen_flush_pending_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceContext2D);
 };
 
 }  // namespace pepper
 
 #endif  // WEBKIT_GLUE_PLUGINS_PEPPER_DEVICE_CONTEXT_2D_H_